In contrast, temporary food sources that
are unpredictable in time and space must be exploited in a different
way. Animals that are specialized in exploiting such food, such as
obligate scavengers, are generally mobile and have evolved astonishing
abilities of fast detection and consumption. The turkey
vulture, Cathartes aura, for example, is known to have a remarkable
sense of smell for rapid detection of fast-decaying carcasses in
tropical forests